HP QMS 1660 - Manual (Page 69)

Interfaces
4-37 Printer Configuration
Baud Rate
Sets the rate data is received (bits per second) from the host over the
serial interface.
Data Bits
Sets the number of data bits transmitted per character.
Default Job Priority
Allows you to specify which jobs are printed first, according to the
interface through which they are received, when jobs are received
simultaneously. In other words, you can give jobs received via the
Menu Administration/Communications/Serial/Baud Rate
Choices 300, 600, 1200, 2400, 4800, 9600, 19200, 38400
Default 9600
Notes Set this option to match the baud rate used by the host. Baud
rates of 19200 and 38400 require RTS/CTS hardware flow
control (Administration/Communications/Serial/Hdwe Flow Ctl
menu). These rates do not support XON/XOFF software flow
control (Administration/Communications/Serial /Rcv Sw Flow
Ctl menu).
When selecting a baud rate of 2400 or below, increase the
Administration/Communications/Timeouts/Emul Timeout
value as follows:
Baud Rate Emulation Timeout (seconds)
2400 10*
1200 20
600 40
300 80
*A baud rate of 2400 works with a 5-second emulation timeout
value, but there is no margin for delays between characters.
Menu Administration/Communications/Serial/Data Bits
Choices 7 Bits, 8 Bits
Default 8 Bits